Mid term Vocab part 2 Flashcards Preview

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Flashcards in Mid term Vocab part 2 Deck (145)
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1

phrenology

• studying bumps on the skull

2

biological psychology

links between biological and psychological processes

3

neuron

o nerve cells, or building blocks of our bodys nueral information system

4

dendrites

recieve information and conduct it toward the cell body

5

axon

o pass the message through its terminal branches to other nuerons or to muscles or glands

6

myelin

• layer of fatty tissue that insulates axons and speeds their impulses (insulation)

7

action potential

• brief electrical charge that travels down its axon

8

refractory period

• period of inactivity after a nueron has fired

9

threshold

• the level of stimulation required to trigger a nueral impulse

10

all or none response

• a nuerons reaction of either firing ( with a full strength response ) or not firing

11

synapse

o meeting point of to nuerons (synaptic gap or synaptic cleft

12

neurotransmitters

o chemical messengers that cross the synaptic gaps between nuerons

13

reuptake

o a nuerotransmitter’s reabsorption by the sending nueron

14

endorphins

natural opiate like neurotransmitters linked to pain control and to pleasure

15

agonist

a molecule that, by binding to a receptor site, stimulates a response

16

antagonist

o a molecule that, by binding to a recptor site, inhibits or blocks a response

17

Acetylcholine

o enables muscle action, learning, and memory

18

dopamine

o influences movement, learning, attention, and emotion

19

serotonin

o affects mood, hunger, sleep, and arousal

20

norepinephrine

o helps control alertness and arousal

21

GABA

o a major inhibitory nuerotransmitter

22

glutamate

o a major excittory nuerotransmitter; involved in memory

23

endorphins

o “morphine within” natural, opiate like - nuerotransmitters linked to pain control and to pleasure
• explain runners high, ainkilling effects of acupuncture

24

nervous system

BODY’S SPEEDY, ELECTROCHEMICAL COMMUNICATION NETWORK, CONSISTING OF ALL THE NERVE CELLS OF THE PERIPHERAL AND CENTRAL NERVOUS SYSTEMS

25

central nervous system

• brain and spinal chord

26

peripheral nervous system

• responsible for gathering information and for transmitting CNS (central nervous systems) decisions to other body parts

27

nerves

• electrical cables formed of bundles of axons, link the central nervous system with the body’s sensory receptors, muscs, and glands.

28

sensory neurons

• nuerons that carry incoming informtion from the sensory recetors to the brain and spinal cord

29

motor neurons

• nuerons that carry outgoing information from the brain and spinal cord to the muscles and glands

30

interneurons

• nuerons within the brain and spinal cord that communicate internally and intervene between the sensory inputs and motor outputs